EP1327469A4 - Method and apparatus for crystallization - Google Patents

Method and apparatus for crystallization

Info

Publication number
EP1327469A4
EP1327469A4 EP01965657A EP01965657A EP1327469A4 EP 1327469 A4 EP1327469 A4 EP 1327469A4 EP 01965657 A EP01965657 A EP 01965657A EP 01965657 A EP01965657 A EP 01965657A EP 1327469 A4 EP1327469 A4 EP 1327469A4
Authority
EP
European Patent Office
Prior art keywords
slurry
crystals
crystallization
crystallization tank
returning
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP01965657A
Other languages
German (de)
French (fr)
Other versions
EP1327469A1 (en
EP1327469B1 (en
Inventor
Takahisa Furuya
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Gas Chemical Co Inc
Original Assignee
Mitsubishi Gas Chemical Co Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Gas Chemical Co Inc filed Critical Mitsubishi Gas Chemical Co Inc
Publication of EP1327469A1 publication Critical patent/EP1327469A1/en
Publication of EP1327469A4 publication Critical patent/EP1327469A4/en
Application granted granted Critical
Publication of EP1327469B1 publication Critical patent/EP1327469B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D9/00—Crystallisation
    • B01D9/02—Crystallisation from solutions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D9/00—Crystallisation
    • B01D9/0059—General arrangements of crystallisation plant, e.g. flow sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D9/00—Crystallisation
    • B01D9/0063—Control or regulation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D9/00—Crystallisation
    • B01D9/0068—Prevention of crystallisation

Landscapes

  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

A method for crystallization which comprises sending a solution or a slurry formed by partial precipitation of a solute to a crystallization tank, precipitating the solute in the crystallization tank to yield a slurry comprising crystals and the solvent, and discharging it, wherein a crystal return device for separating crystals from the resultant slurry and returning them or for concentrating the slurry and returning the concentrate is installed and part or all of the resultant slurry discharged from the crystallization tank is introduced into the crystal return device to conduct crystallization while returning either crystals taken out of the resultant slurry or a slurry concentrate to the crystallization tank. By thus installing the crystal return device and conducting crystallization while returning crystals or a slurry concentrate to the crystallization tank, the crystal residence time in the crystallization tank can be increased or the slurry concentration can be heightened. By controlling the flow rate of crystals returned, the particle size distribution is improved and crystals having any desired average particle diameter are obtained. Further, crystal deposition in the crystallization tank and on those surfaces of peripheral instruments which are in contact with the liquid can be prevented.
EP01965657A 2000-09-29 2001-09-14 Method and apparatus for crystallization Expired - Lifetime EP1327469B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2000299873 2000-09-29
JP2000299873A JP5008215B2 (en) 2000-09-29 2000-09-29 Crystallization method and apparatus
PCT/JP2001/008004 WO2002028498A1 (en) 2000-09-29 2001-09-14 Method and apparatus for crystallization

Publications (3)

Publication Number Publication Date
EP1327469A1 EP1327469A1 (en) 2003-07-16
EP1327469A4 true EP1327469A4 (en) 2004-04-07
EP1327469B1 EP1327469B1 (en) 2006-04-12

Family

ID=18781623

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01965657A Expired - Lifetime EP1327469B1 (en) 2000-09-29 2001-09-14 Method and apparatus for crystallization

Country Status (10)

Country Link
US (1) US6966947B2 (en)
EP (1) EP1327469B1 (en)
JP (1) JP5008215B2 (en)
KR (1) KR100841502B1 (en)
CN (1) CN1208108C (en)
AU (1) AU2001286249A1 (en)
DE (1) DE60118766T2 (en)
MY (1) MY129880A (en)
TW (1) TW575456B (en)
WO (1) WO2002028498A1 (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE350121T1 (en) * 2002-05-31 2007-01-15 Accentus Plc PRODUCTION OF CRYSTAL MATERIALS USING HIGH POWER ULTRASOUND
US7402245B2 (en) * 2005-01-21 2008-07-22 Ebara Corporation Digested sludge treatment apparatus
JP4743627B2 (en) * 2006-06-30 2011-08-10 水ｉｎｇ株式会社 Water or sludge treatment equipment containing ions in liquid
JP2008308461A (en) * 2007-06-15 2008-12-25 Sumitomo Chemical Co Ltd METHOD FOR PRODUCING epsilon-CAPROLACTAM
US20110024354A1 (en) * 2009-07-30 2011-02-03 General Electric Company Desalination system and method
DE102009046910A1 (en) * 2009-11-20 2011-05-26 Evonik Degussa Gmbh Process for the processing of a material stream containing laurolactam for the recovery of all valuable components contained by combination of crystallization with downstream distillation
JP5569108B2 (en) * 2010-04-05 2014-08-13 三菱レイヨン株式会社 (Meth) acrylic acid purification method
JP5521180B2 (en) * 2011-06-23 2014-06-11 太平洋セメント株式会社 Method for producing lithium iron phosphate or lithium iron silicate
GB201121401D0 (en) * 2011-12-13 2012-01-25 Univ Heriot Watt Device for inducing nucleation
KR101184795B1 (en) * 2012-02-03 2012-09-20 강석웅 Crystallization reaction apparatus for the resources recovery of phosphorus and nitrogen
KR101357165B1 (en) * 2013-02-07 2014-02-04 한국지질자원연구원 Method of ammonium sulfate by the crystallization
CN114307641A (en) * 2021-12-01 2022-04-12 四川泸天化股份有限公司 High-purity solid automobile urea and preparation method thereof
CN114573055B (en) * 2022-03-25 2023-10-10 吉林吉恩镍业股份有限公司 Preparation and application methods of liquid nickel sulfate seed crystal
CN115121003A (en) * 2022-07-18 2022-09-30 杭州安永环保科技有限公司 Continuous crystallization method

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3900292A (en) * 1970-12-08 1975-08-19 Kerr Mc Gee Chem Corp Automatic control of crystal size distribution
US4781899A (en) * 1984-07-27 1988-11-01 Intermountain Research & Development Corporation Purification of crystallized solids made via continuous crystallization
EP0299597A2 (en) * 1987-04-28 1989-01-18 Suntory Limited Method and apparatus for removing tartrates or like impurities
JPH04217947A (en) * 1990-06-27 1992-08-07 Ajinomoto Co Inc Crystallization of amino acid or nucleic acid

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4735184Y1 (en) * 1969-06-26 1972-10-24
JPS59199528A (en) * 1983-04-26 1984-11-12 Asahi Glass Co Ltd Method for depositing ammonium chloride
KR940001916A (en) * 1992-07-06 1994-02-16 프랭크 피. 스미스 Multistage Recrystallization for Superfine Crystalline Materials
JPH0691103A (en) * 1992-09-14 1994-04-05 Tsukishima Kikai Co Ltd Countercurrent cooling and purifying device for melt and method therefor
TW305830B (en) * 1993-03-26 1997-05-21 Sulzer Chemtech Ag
US6013835A (en) * 1995-06-07 2000-01-11 Hfm International, Inc. Method and apparatus for preparing purified terephthalic acid
NL1017956C2 (en) * 2001-04-27 2002-11-05 Korporam B V Multi-stage countercurrent crystallizer.
US6565653B2 (en) * 2001-05-08 2003-05-20 Bp Corporation North America Inc. Energy efficient process for producing high purity paraxylene
US6703479B1 (en) * 2001-12-03 2004-03-09 Uop Llc Process and apparatus for cooling polymer in a reactor
JP4735184B2 (en) * 2005-10-20 2011-07-27 株式会社デンソー Abnormality discrimination evaluation method for welded workpiece and abnormality discrimination evaluation device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3900292A (en) * 1970-12-08 1975-08-19 Kerr Mc Gee Chem Corp Automatic control of crystal size distribution
US4781899A (en) * 1984-07-27 1988-11-01 Intermountain Research & Development Corporation Purification of crystallized solids made via continuous crystallization
EP0299597A2 (en) * 1987-04-28 1989-01-18 Suntory Limited Method and apparatus for removing tartrates or like impurities
JPH04217947A (en) * 1990-06-27 1992-08-07 Ajinomoto Co Inc Crystallization of amino acid or nucleic acid

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 016, no. 560 (C - 1008) 2 December 1992 (1992-12-02) *
See also references of WO0228498A1 *

Also Published As

Publication number Publication date
AU2001286249A1 (en) 2002-04-15
EP1327469A1 (en) 2003-07-16
KR20030039375A (en) 2003-05-17
DE60118766T2 (en) 2006-09-21
JP5008215B2 (en) 2012-08-22
JP2002102603A (en) 2002-04-09
TW575456B (en) 2004-02-11
WO2002028498A1 (en) 2002-04-11
US20030180203A1 (en) 2003-09-25
MY129880A (en) 2007-05-31
CN1208108C (en) 2005-06-29
EP1327469B1 (en) 2006-04-12
KR100841502B1 (en) 2008-06-25
CN1466480A (en) 2004-01-07
US6966947B2 (en) 2005-11-22
DE60118766D1 (en) 2006-05-24

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